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What happens to chimps used in medical research?
animals.howstuffworks.com/mammals/chimpanzee-research.htm
Chimpanzee research dates back to the 1920s with Robert Yerkes. Learn what happens in chimpanzee research and why some countries ban the practice.
10 Cool Engineering Tricks the Romans Taught Us
science.howstuffworks.com/engineering/structural/10-roman-engineering-tricks.htm
When it came to building or improving things, the ancient Romans really knew their stuff. Which cool engineering tricks did they pass along to us?
The History and Symbolism of the U.S. Presidential Seal
people.howstuffworks.com/culture-traditions/national-traditions/presidential-seal.htm
Do you know the history and significance of the presidential seal? HowStuffWorks takes a look.
Is North Korea Equipped to Attack the United States?
science.howstuffworks.com/north-korea-threat.htm
The Kim Jong Un regime continues to demonstrate its desire to threaten the U.S. and its allies with nuclear-armed ICBMs. But can any of these missiles actually reach the U.S. mainland?
What is a keyhole satellite and what can it really spy on?
science.howstuffworks.com/question529.htm
On a television drama last week, the plot involved photos taken of a Russian missile silo, and the characters mentioned a "keyhole satellite." What is a keyhole satellite and what can it really spy on?
How Submarines Work
science.howstuffworks.com/transport/engines-equipment/submarine.htm
Not so long ago, the world's naval forces worked entirely above water. But all that changed with the addition of the submarine to the standard naval arsenal.
10 Widely Believed U.S. Government Conspiracy Theories
people.howstuffworks.com/10-u-s-government-conspiracy-theories.htm
There are a few U.S. government conspiracy theories that many people believe. See this list of 10 theories to decide for yourself.
How the CIA Used 'Vampires' to Fight Communism in the Philippines
history.howstuffworks.com/world-history/cia-vampires-communist-rebels-philippines.htm
During in the Cold War, a CIA operative in the Philippines used the local folklore myth of the blood-sucking aswang to try and scare off communist rebels. Did it work?
How the MQ-9 Reaper Works
science.howstuffworks.com/reaper.htm
Early unmanned aerial vehicles (UAVs) primarily carried out reconnaissance missions in war zones, but the Reaper packs some serious heat. Is there anything more foreboding than a drone with a Hellfire missile?
POW/MIA Bracelets Helped U.S. Remember Missing Soldiers
history.howstuffworks.com/american-history/pow-mia-bracelets.htm
POW/MIA bracelets were sold by the thousands to Americans in an effort to remember them. HowStuffWorks takes looks at these relics of the Vietnam War.